2804results about "Surface mining" patented technology

A mining, releasing and filling process flow collaboration method for a nearly-upright super-thick coal seam belongs to the technical field of coal mining and comprises the following steps: dividing the nearly-upright super-thick coal seam into a plurality of sections, respectively establishing a low-level mining and releasing system at the bottom of each section, and respectively establishing a high-level filling system at the horizontal position of the top interface of each section; comprising a coal mining period and a filling period, after the low-position mining and caving system is established, coal mining and caving are carried out through a coal mining machine and a support in the coal mining period, in the machine following and support moving process, a novel support synchronously lays a separation net on a goaf, and after a filling step pitch is pushed forwards, the novel support unfolds slurry blocking cloth; then filling slurry is injected into the goaf through a high-position filling process roadway, a filling chamber and a filling hole in sequence, the stability of nearly upright surrounding rock is maintained, and it is ensured that the mining depth is safely extended; the method effectively solves the problems of difficulty in prevention and control of surrounding rock instability, difficulty in control of cutting type subsidence and low recovery rate of coal resources in the existing horizontal section fully mechanized caving mining method of the steeply inclined nearly-upright extra-thick coal seam.

The invention discloses a goaf CO2 sealed storage warehouse construction and grouting filling fire preventing and extinguishing method, and belongs to the technical field of goaf filling. The goaf CO2 sealed storage depot comprises a CO2 storage depot unit, a solid waste filling column and inflation-grouting equipment, an inflation bag is arranged in the CO2 storage depot unit, the inflation bag is movably connected in the CO2 storage depot unit, the CO2 sealed storage depot is constructed in the goaf through the inflation bag, alkaline solid waste and mineralized slurry, and the storage depot is used for supporting a roof rock stratum and storing CO2. Large-scale recycling of the alkaline solid waste can be achieved through the sealed storage warehouse, the storage warehouse is used for supporting the goaf roof rock stratum and storing CO2, the roof rock stratum is prevented from collapsing and endangering mine production safety, CO2 emission is reduced, the greenhouse effect is improved, and cooperative treatment of goaf fire and CO2 storage is achieved.

The invention discloses a negative carbon coplanar filling system arrangement and mining method, which comprises the following steps of: stoping by adopting a rear gangue high-porosity filling coal mining technology, retaining a stoping roadway on one side of a filling section by utilizing a gob-side entry retaining technology, and reinforcing by adopting a roadway-side support body; the mining roadway serves as a CO2 filling roadway of the working face and a mining roadway on one side of an adjacent filling working face; when the working face advances by 300-500 m, the working face is separated from a rear goaf through a sealing wall, and a sealed storage space is formed; then, drill holes are formed in the goaf through the CO2 injection and filling roadway, and CO2 injection and filling pipelines are arranged in the mining roadway and the drill holes; and CO2 is injected into the goaf by the CO2 injection pump through the CO2 injection pipeline, and after injection is completed, CO2 injection in the next closed space is started until injection of the working face is completed. The system is simple in arrangement, CO2 filling and coal mining filling do not interfere with each other, operation is flexible, the sealing performance of the sealing space is good, the dual purposes of solid waste disposal and CO2 sealing are achieved, and green mining of coal resources is achieved.

The invention discloses a steeply-inclined nearly-upright extra-thick coal seam horizontal section fully-mechanized caving filling mining method, and relates to the technical field of coal mining. The method includes the following steps that the nearly-vertical super-thick coal seam is divided into different mining levels of 20-40 m, a low-position mining and releasing system is arranged at the horizontal position of the junction of a current section and a lower section, a high-position filling system is arranged in a top plate or bottom plate rock pillar at the horizontal position of the junction of the current section and an upper section, and the coal seam of the current section is mined through a fully-mechanized caving mining method; along with advancing of the coal face, a separation net and slurry blocking cloth are laid on the goaf through a net laying and slurry blocking support; a suspended cavity space detection characterization robot arranged in the high-position filling system is used for carrying out goaf space detection; the method comprises the following steps: dividing a nearly upright extra-thick coal seam into different sections for section mining, performing in-situ grouting filling on a subsequent mining space in the mining process, forming a stable filling interface in a goaf, fundamentally weakening stress concentration and reducing energy accumulation, and realizing collaborative proceeding of filling and coal mining.

The invention discloses a filling disaster prevention and control green mining method for a nearly-upright extra-thick coal seam, and relates to the technical field of coal mining. The method includes the following steps that the nearly-vertical super-thick coal seam is divided into different sections according to the thickness of 20-40 m; all the sections are mined through a fully mechanized caving mining method, after the coal face is advanced by 8-10 m, namely a mining and filling step pitch, slurry blocking cloth is arranged on a top coal caving filling mining hydraulic support, and a separation net is laid in a goaf; grouting and filling are conducted on the goaf through the high-position process roadway; the nearly vertical coal seam is divided into a plurality of horizontal sections, the descending mining sequence is adopted, goaf timely filling is matched, rock stratum movement can be precisely and cooperatively controlled, steeply inclined rock stratum displacement and deformation caused by coal seam mining are effectively reduced, surrounding rock stress is remarkably weakened, earth surface deformation is controlled, and compared with a traditional mining mode, the mining efficiency is improved. And the risk of coal rock dynamic disasters is greatly reduced.

The invention relates to the technical field of coal mine safety mining, and discloses a coal rock gas disaster protective layer drilling hierarchical regulation and control method which comprises the following steps: S1, geological survey; s2, drilling and pressure relief; s3, hydraulic fracturing is carried out; s4, gas extraction is carried out; s5, top plate deep hole blasting; s6, advanced cave building energy absorption flexible supporting is carried out; s7, grouting reinforcement is conducted; and S8, continuous regulation and control. According to the protection layer drilling grading regulation and control method for coal rock gas disasters, multiple functions are integrated into a single drilling hole, resource saving, cost reduction and efficiency improvement are achieved, mine environment interference is effectively reduced, meanwhile, the state of a coal rock gas system is continuously regulated and controlled, the timeliness and flexibility of disaster prevention and control are ensured, and the protection layer drilling grading regulation and control method is suitable for popularization and application. The method adapts to different geological conditions, enhances coal mine safety, embodies double benefits of green mining and economic optimization, and marks the leading-edge progress of a coal mine safety technology.

A system and a method for monitoring overlying roof rock and coal pillar in gob-side entry are provided. The system includes top monitoring stations, coal pillar comprehensive monitoring stations, roof stress monitoring stations, and a master computer. Top monitoring stations are arranged in the crossheading to monitor the working face, coal pillar comprehensive monitoring stations are arranged in the upper roadway of the lower coal seam working face to monitor the coal pillars, and roof stress monitoring stations are arranged in the mining area main roadway to monitor the coal pillars. Monitoring the stress and deformation distribution of coal pillars in the goaf and the movement and failure process of overburden strata structure through the master computer control each monitoring station. The monitoring stations ensure that the overburden strata movement monitoring stations are still in working condition after the goaf is formed by mining in the working face.

A ground-underground cooperative area weakening based rockburst prevention and control method for a thick and hard roof. The method comprises: first obtaining spatial distribution characteristics of a hard roof; then on the basis of the spatial distribution characteristics of the hard roof, obtaining different types of fracturing prevention and control target horizons and five fracturing prevention and control patterns corresponding thereto, wherein the five fracturing prevention and control patterns comprise: a low-position single thick and hard roof horizon, a low-position composite hard roof horizon, a high-low position composite thick and hard roof horizon, a high-position composite thick and hard roof horizon, and a high-position single thick and hard roof horizon. The method can fundamentally and comprehensively solve the problem of rockburst hazards induced by a thick and hard roof.

The invention belongs to the technical field of safe mining of coal mines, and relates to a hydraulic fracturing roof-cutting entry retaining method based on a crushing agent, which comprises the following steps of: calculating to obtain a target fracturing horizon height h of roof-cutting entry retaining according to a working face height M and a residual crushing coefficient KZ of a roof; calculating the crack initiation pressure P of a target fractured position of the roof-cut entry retaining according to the rock stress P * and the tensile strength R of the rock at the fractured position of the roof-cut entry retaining; drilling is conducted according to the drilling position, the drilling length L and the drilling angle alpha; the prepared BC-efficient soundless cracking agent flowable pasty slurry is injected into a drill hole through a hydraulic fracturing system and is fractured at a target fractured layer, and after the BC-efficient soundless cracking agent flowable pasty slurry is subjected to standing reaction, the drill hole is fractured for multiple times in a single-hole retreating mode. The problems that a large amount of water resources are consumed, the rock permeability is possibly increased due to high-pressure water injection, and mine water disaster hidden dangers are caused are solved.

The invention provides a safe, efficient and high-recovery-rate segmented medium-length hole mining method, and belongs to the field of underground mining. Firstly, presplitting blast holes are formed in rock drilling roadways at the bottoms of stopes, ore bodies at the boundaries of every two adjacent stopes are divided into triangular jambs, and the presplitting blast holes are charged at intervals and subjected to blasting presplitting; separating the top boundary of the triangular jamb from the mining lower boundary of the stope, performing blasting recovery and filling on the triangular jamb, and performing blasting recovery and filling on the normal ore body of the stope. According to the method, the bottom structure of the stope is optimally arranged, ore body mining boundary control is achieved, meanwhile, the stoping sequence is adjusted in a matched mode, ore resources pressed and covered in a triangular pillar area are effectively recycled, construction safety is guaranteed, the situation of mining under a filling body is avoided, and the mining efficiency is improved. And the lean loss index of ore resource recovery is accurately controlled, and the recovery of the triangular jambs and the normal recovery of the stope are orderly linked, so that the efficient production of the stope is realized.

The invention provides a mining inorganic environment-friendly reinforcing material and application thereof, and belongs to the technical field of mining reinforcing materials. A component A comprises the following components in parts by mass: 60-80 parts of anhydrite, 5-20 parts of lime, 5-10 parts of silica fume, 2-8 parts of sodium silicate, 1-0.5 part of a naphthalene water reducer, 3-7 parts of an early strength agent and 0.2-0.8 part of lithium salt; the component B comprises the following components in parts by mass: 50-70 parts of cement clinker, 10-30 parts of slag cement, 5-10 parts of iron powder, 1-8 parts of aluminum sulfate, 5-10 parts of calcium carbonate and 0.5-1 part of sodium tripolyphosphate; the component C is prepared from the following components in parts by mass: 10 to 25 parts of water glass, 10 to 20 parts of emulsion, 40 to 60 parts of water, 5 to 10 parts of high-efficiency water reducing agent and 1 to 5 parts of triethanolamine. The mining inorganic environment-friendly reinforcing material provided by the invention is low in reaction heat and is not easy to cause coal combustion.

A super-long working face mining method, comprises the following steps: sequentially providing a total of four roadways, i.e., a left edge roadway, a left middle roadway, a right middle roadway, and a right edge roadway, from left to right in a working face in a direction perpendicular to coal to be mined, wherein a coal pillar having a certain width is arranged between the left middle roadway and the right middle roadway; arranging in the working face a left transfer conveyor (1), a right transfer conveyor (21), and a scraper conveyor used to connect the two transfer conveyors, wherein the left transfer conveyor (1) is arranged in the left edge roadway, the right transfer conveyor (21) is arranged in the right edge roadway, and the scraper conveyor is arranged at the mining end of the working face; the left middle roadway and the right middle roadway being material roadways, arranging, in the left middle roadway and the right middle roadway, devices for delivering materials required by the working face, transmitting power, and delivering water; during working face mining, using two coal mining machines (22) for mining, to carry out mining operation on coal and coal pillar of the super-long working face between the left edge roadway and the right edge roadway.

Disclosed in the present invention is a method for draining water of coal mine goafs by crossing an adjacent goaf. An applicable environment of the method comprises a first goaf, a second goaf and a third goaf which are successively arranged on a side of a tunnel, directional drilling mechanisms being provided between the tunnel and the second goaf and between the tunnel and the third goaf, and the directional drilling mechanisms penetrating through a coal seam floor located at the bottom of the goafs so as to communicate with the second goaf and the third goaf. Directional holes comprise a first directional hole and a second directional hole, the first directional hole leading to the second goaf, the second directional hole leading to the third goaf, and a sleeve structure being mounted in the first directional hole. The present invention uses directional drilling, and the directional holes penetrate into and out of the coal seam floor, so as to cross the adjacent goaf, thus increasing the range of explored and drained goafs and the hole length so as to drain in advance water accumulated in the remaining goafs that cannot be drained in a traditional coal mine drilling mode. The present invention can be popularized and used in the field of coal mines to solve the present threat of goaf water to coal mine production.

The invention belongs to the technical field of equipment control systems, and discloses a deep well mining equipment intelligent control system which comprises a multi-source data sensing module, a decision module and an equipment cooperative control module. The multi-source data sensing module comprises a distributed Internet of Things sensing unit, an InSAR remote sensing detection unit and a data fusion gateway unit. The decision-making module receives the multi-source signal and comprises a prediction unit, an optimization unit and a regulation and control unit, the prediction unit processes the multi-source signal and outputs a height prediction signal and an aquifer penetration risk signal, and the optimization unit processes the multi-source signal and the height prediction signal to obtain an optimal grouting signal; and the regulation and control unit defines a water retention constraint condition according to the multi-source signal and outputs a safe mining threshold value. According to the intelligent control system of the deep well mining equipment, the problems of water resource loss and pollution caused by traditional deep well mining operation can be solved.

The invention discloses a negative carbon filling mining method for a gangue high-porosity material, and relates to the technical field of CO2 storage and filling mining, which comprises the following steps: spraying a rapid cementing material while blanking a gangue bulk material, forming a high-porosity filling body in a goaf, continuously injecting liquid CO2 into the closed high-porosity filling body through a pipeline, and filling the high-porosity filling body into a high-porosity filling body. The underground efficient sealing of CO2 is realized; the method is simple in design, the filling technology and CO2 storage are combined, efficient mining and filling are achieved, coal resource mining is not affected, the mine green mining and negative carbon filling construction process is promoted, a new concept of carbon storage is provided, wide application and research significance is achieved, and compared with a solid filling mining method, the method has the advantage that the method has a wide application prospect. And the gangue is fixed by using the rapid binding material to form a high-porosity material with bearing performance, so that the cost of a filling mining technology is reduced, and the original tamping process is simplified.

The invention discloses a thick-layer roof induced rock burst and mine earthquake composite disaster cooperative prevention and control method, which comprises the following steps of: determining a plurality of key layers of a thick-layer roof according to a key layer theory, and establishing a disaster-causing main control layer model by using an underground micro-earthquake monitoring system, determining the position of an impact disaster-caused main control layer and the position of a mine earthquake disaster-caused main control layer by combining the key layer and the disaster-caused main control layer model; establishing a multi-disaster-causing layer collaborative treatment scheme according to the positions and thicknesses of the impact disaster-causing main control layer and the mine earthquake disaster-causing main control layer and the information of the rock strata where the positions are located, then performing a scheme test, and correcting the treatment scheme according to a test result; according to the corrected multi-disaster-causing-layer collaborative treatment scheme and the disaster-causing main control layer model, collaborative fracturing prevention and control operation is conducted on the thick-layer roof with the impact disaster-causing main control layer or the mine earthquake disaster-causing main control layer; and the collaborative prevention and control effect of rock burst and mine earthquake composite disasters is checked. According to the invention, cooperative prevention and control of composite disasters of rock burst and mine earthquakes induced by the thick-layer roof can be realized.

The invention relates to the technical field of mining machinery, in particular to a gold mine mining blasting automatic trepanning device and a trepanning method.The gold mine mining blasting automatic trepanning device comprises a base plate, the base plate is an assembly carrier of the drilling device and can be externally connected with an engineering vehicle or an engineering mechanical arm, a mounting frame is fixedly mounted on the base plate, and the mounting frame is a frame body with an opening in the top; the guide frame is fixedly arranged at the top of the mounting frame, and the guide frame is an annular frame body internally provided with a clamping groove; the gear ring is rotationally mounted in a clamping groove in the guide frame; and the rotating frame is fixedly arranged in the gear ring. By means of the spiral blades on the drill rod, fragments generated in the drilling process are synchronously pushed out, the situation that the fragments are accumulated near the drill bit to affect efficiency is prevented, meanwhile, cooling water is allowed to enter a drilling area through the arrangement of the flow guide through hole and the connecting pipe in the drill bit, the fragments are helped to be flushed out of the hole, and the drilling efficiency is further improved.

The invention discloses a high gas impact ground pressure mine island working face blasting pre-pressure-relief scour prevention method which comprises the steps that a scour inducing key layer in a top plate above an island working face is determined, a top plate pre-splitting pressure relief roadway with specific construction parameters is arranged in the scour inducing key layer, and by means of the mode, elastic deformation accumulated in the scour inducing key layer can be effectively reduced, and one-time pressure relief can be achieved; then, a plurality of blast holes with specific parameters are constructed from the roof presplitting pressure relief roadway to the inducing key layer, finally, the blast holes are sectioned according to the hole depth and sequentially blasted, energy release of each time of blasting is accurately controlled through sectioned blasting, meanwhile, continuous pressure relief is achieved in time and space through sectioned blasting, and the blasting efficiency is improved. The stress of the inducing key layer is effectively released to realize secondary pressure relief; through mutual cooperation of primary pressure relief of the roof presplitting pressure relief roadway and secondary pressure relief of segmented blasting of the blast hole, the mine roof type impact risk facing high gas, an island working face and mining rock burst is effectively reduced, and subsequent safe mining of the island working face is guaranteed.

This invention discloses a coal caving end support and coal caving method for a top coal caving face, comprising a support body, a net breaking device, and a roof breaking device. The support body includes a top beam and a base. The net breaking device includes a cantilever beam, a swing jack, a telescopic beam, a telescopic jack, and a cutter. The cantilever beam is rotatably connected to the top beam. The swing jack is connected between the top beam and the cantilever beam and is used to drive the cantilever beam to swing up and down. The telescopic beam is slidably mounted on the cantilever beam. The telescopic jack is connected between the cantilever beam and the telescopic beam and is used to drive the telescopic beam to slide relative to the cantilever beam. The cutter is located at the free end of the telescopic beam. The roof breaking device includes a column base, an impact column, and a column jack. The column base is connected to the rear of the base. The impact column is rotatably mounted on the column base. The column jack is connected between the column base and the impact column. The end support of this invention can realize net breaking and roof breaking operations in the triangular area of ​​the working face, avoiding large-area overhang situations caused by large lag in roof collapse.

The invention discloses a coal mining rock burst prevention and early warning system which comprises a data acquisition system, and the data acquisition system comprises a sensor network, a self-adaptive sensor layout module, a signal sending module and a power supply module. The sensor network comprises a stress sensor, a displacement sensor and a vibration sensor which are arranged in a coal mine tunnel; the signal sending module is used for sending data acquired by the sensor; the power module is used for supplying power to the sensor network and the signal sending module. The coal mining rock burst prevention and early warning system is compatible with three kinds of sensing data of a stress sensor, a displacement sensor and a vibration sensor, and the positions and density of the sensors in a high-risk area are dynamically adjusted. And establishing a coal seam rock burst risk evaluation expert system by using the monitored result, and evaluating the early warning result. The sensor layout strategy of the coal mining rock burst prevention and early warning system is optimized, the monitoring capability of a high-risk area is improved, and the rock burst danger early warning level can be improved.

The invention relates to the technical field of coal mine hydrological monitoring, in particular to a combined monitoring method based on directional drilling underwater coal mining dynamic fracture development. The method comprises the following steps: determining the predicted height of a water-flowing fractured zone, and obtaining a target horizon according to the predicted height of the water-flowing fractured zone; the position of a key layer is determined according to the target layer, and a ground drilling position is arranged on the ground; drilling according to the ground drilling position, the key layer and the target layer; when the hole is drilled to the target horizon, the water flowing fractured zone development height of the to-be-detected working face is obtained and recorded as the drilling water flowing fractured zone development height; arranging an underground detector, determining the development height of the water-flowing fractured zone according to the underground detector, and recording the development height as the development height of the micro-seismic water-flowing fractured zone; and acquiring the development height of the detected water-flowing fractured zone based on the development height of the drilling water-flowing fractured zone and the development height of the micro-seismic water-flowing fractured zone. Directional drilling and micro-seismic monitoring are combined, the water flowing fractured zone is comprehensively analyzed, and the accuracy of an analysis result is improved.

The invention provides a rock burst and mine earthquake collaborative treatment method based on regional fracturing, and the method comprises the following steps: selecting a working surface, determining a plurality of rock burst control layers with rock burst risks, then determining a plurality of mine earthquake control layers with mine earthquake risks, and determining a plurality of mine earthquake control layers with mine earthquake risks; performing main control layer analysis on all the rock burst control layers in the fissure zone preferentially to determine a multi-stage rock burst main control layer, performing main control layer analysis on all the mine earthquake control layers above the fissure zone to determine a multi-stage mine earthquake main control layer, and performing logging correction analysis; according to the length and width of the working face, the thickness of the rock burst control layer and the number of the mine earthquake control layers, the layout design of separate layer fracturing is determined, the treatment method achieves comprehensive prevention and control of the mine area risk, the treatment effect on the rock burst and the mine earthquake is remarkable, the disaster risk is reduced, and a powerful guarantee is provided for mine safety production.

The invention discloses a top coal caving working face coal caving end support and a coal caving method, the top coal caving working face coal caving end support comprises a support body, a net breaking device and a top breaking device, and the support body comprises a top beam and a base; the net breaking device comprises an outrigger, a swing jack, a telescopic beam, a telescopic jack and a cutter; the cantilever beam is rotationally connected with the top beam, the swing jack is connected between the top beam and the cantilever beam and used for driving the cantilever beam to swing up and down, the telescopic beam is slidably assembled on the cantilever beam, the telescopic jack is connected between the cantilever beam and the telescopic beam and used for driving the telescopic beam to slide relative to the cantilever beam, and the cutter is arranged at the free end of the telescopic beam. The top breaking device comprises a stand column base, an impact stand column and a stand column jack. The stand column seat is connected behind the base, the impact stand column is rotationally assembled on the stand column seat, and the stand column jack is connected between the stand column seat and the impact stand column. By means of the end support, net breaking and roof breaking operation of a triangular area of a working face can be achieved, and the conditions that the roof caving lagging amount is large, and large-area roof suspension occurs are avoided.

The invention provides a broken rock mass roof cutting pressure relief method based on ultrasonic vibration excitation, which comprises the following steps of: 1, determining data of a working face roof and a coal seam according to the geological condition of a coal mine working face; 2, a target rock stratum is determined, and the ultrasonic vibration crushing range is determined; 3, the inherent frequency of the rock at the top cutting position is measured; 4, upward drilling is conducted on a top plate of the to-be-tunneled coal seam according to a preset angle; 5, an ultrasonic excitation device is placed in the pressure relief drill hole and fixed; 6, under the combined action of ultrasonic excitation and impact load, tiny cracks on the surface of the target rock stratum continuously develop and rapidly expand and penetrate through; and seventhly, ultrasonic vibration treatment is conducted on the preset pressure relief drill holes for multiple times. According to the method for top cutting and pressure relief of the fractured rock mass based on ultrasonic vibration excitation, the pressure relief range is large, and the problems that the stress of a top plate above an untunneled coal seam is too large, and a hydraulic support cannot be normally pushed forwards can be effectively solved.

A method for mining a single coal outlet in an ultra-long working surface comprises: disposing a scraper conveyor on a working surface and arranging two shearers at the two ends; the two shearers synchronously cutting notches in directions towards a middle portion of the working surface, obliquely inserting blades, and starting a normal mining operation; when the two shearers reach the middle portion of the ultra-long working surface, either one of the two shearers starting to operate in the reverse direction, while the other shearer does not change the direction of operation and performs a cutting and mining operation at a middle position of the working surface; and after the other shearer completes the cutting and mining operation at the middle position, starting to operate in the reverse direction. The steps above are a working cycle, and a plurality of working cycles are performed in sequence to complete mining work on the ultra-long working surface.

The invention discloses a thin coal seam unmanned working face intelligent mining control method which comprises the following steps that after a thin coal seam working face is mined, mining parameters of the working face are collected through a detection system, and the mining parameters comprise three-machine operation parameters and mining working condition data; the detection system is used for processing the mining parameters and obtaining mining data, and then the communication system is used for sending the mining data to the control system; the control system is used for carrying out validity analysis on mining data, if the mining data does not meet requirements, the mining data are obtained again, and if the mining data meet the requirements, the electric hydraulic control system is controlled to drive the hydraulic component to act, the cutting control system is controlled to drive the coal mining machine to carry out cutting operation, and the straightening system is controlled to straighten the working face. According to the mining control method, intelligent mining of the thin coal seam can be achieved, the accuracy and efficiency of the whole monitoring and control process are high, and the continuity and safety of mining of the thin coal seam are fully guaranteed.

The invention provides a coal mine scour prevention and shock absorption method with ground horizontal wells and vertical wells arranged in a combined mode, and relates to the technical field of coal mining. By means of the coal mine anti-scour shock-absorbing method for combined arrangement of the ground horizontal well and the vertical well, the advantages of fracturing of the ground horizontal well and the vertical well can be effectively fused, and the defects that single ground vertical well or ground horizontal well arrangement is high in construction cost, limited in coverage range and limited in composite disaster control are overcome; the invention provides a coal mine anti-impact damping technical scheme which is effective and good in economical efficiency. The invention provides a determination basis for comprehensively analyzing and judging fracturing position selection and well shaft arrangement positions of a ground horizontal well and a ground vertical well by combining working face data and open hole logging data, and a method for finely judging and optimizing the fracturing position based on a logging result, and establishes a systematization and standardization basis for designing a ground fracturing overall scheme.

The invention relates to a safe stoping process based on a weak rock mass condition, which comprises the following steps: S1, through three-dimensional geological modeling and crustal stress field measurement, dividing geological units and determining differentiated stope structure parameters; s2, layered stoping, wherein the stope advancing speed is dynamically adjusted according to the ground stress real-time monitoring data; s3, layered filling operation is implemented, a shape memory alloy wire mesh is preset in a filling body, and a grouting channel is reserved in the contact face of the filling body and the surrounding rock; according to the method, through a dynamic correlation model of crustal stress real-time monitoring and propelling speed, the crustal stress change rate is directly converted into a mining parameter adjustment instruction, and dynamic balance of mining strength and crustal stress release is achieved; multi-dimensional data such as ground stress, micro-seismic energy and displacement are collected in real time, data are fused through an algorithm, rock mass mechanical parameters are inverted, a numerical model is optimized, and regulation and control schemes such as stope advancing speed, supporting parameters and filling ratio are automatically generated based on a model prediction result.

The invention discloses comprehensive rock drift rapid tunneling equipment and a using method thereof.According to the tunneling equipment, a drilling and anchoring integrated multifunctional drilling machine is arranged on one side of a cantilever type tunneling machine body, and a temporary supporting mechanism is arranged above an oscillation cutting part; a deep hole is formed in a to-be-crushed rock by utilizing the multifunctional drilling machine, the deep hole is further expanded and cracked by utilizing the pulsating fracturing system, the strength of a rock mass is weakened, then the rock mass is milled by adopting the oscillating cutting part, and finally, the rock mass is anchored and protected by utilizing the multifunctional drilling machine and the temporary supporting device, so that a guarantee is provided for an operation environment. According to the equipment and the technology, a traditional roadway tunneling procedure is simplified into a continuous procedure, the tunneling efficiency of roadway rock mass is greatly improved, and meanwhile the cost is saved.

The invention discloses a V-shaped mine collecting trench construction method for improving the stability of a roadway in an ore pillar, which comprises the following steps of: constructing a plurality of rows of upward fan-shaped blast holes along the trend of a stope, and adding an empty hole in the middle position of each of the left side hole and the right side hole in the adjacent rows of fan-shaped blast holes; the fan-shaped blast holes are filled with explosives, and newly-added empty holes are not filled with explosives; and the cutting raise is used as a blasting free surface, and the fan-shaped blast holes are detonated row by row in several times to form the V-shaped mine collecting trench. According to the method, through cracks are formed along the center connecting lines of the side holes under the guiding effect of the newly-added empty holes during fan-shaped hole blasting, cutting of the V-shaped boundary is completed, damage of fan-shaped blast hole blasting to ore pillar rock mass is reduced, and the purposes of improving the integrality of ore removal roadway surrounding rock and the stability of an ore removal roadway are achieved. The V-shaped ore collecting trench construction method is suitable for V-shaped ore collecting trench construction of a stope bottom structure of an open stope subsequent filling mining method, damage to ore pillar rock mass can be weakened in the V-shaped ore collecting trench construction process, and then the stability of an ore removal roadway is improved.